diff --git a/codegen/datatypes.py b/codegen/datatypes.py
index b7168ce..ef0bdc2 100644
--- a/codegen/datatypes.py
+++ b/codegen/datatypes.py
@@ -147,7 +147,7 @@ class CFunc:
             if i + 1 < len(self.args):
                 args += ", "
 
-        return qualifiers + str(self.ret_type) + " " + str(self.pointer) + self.name + f"({args})"
+        return qualifiers + _get_arg_type_string(self.ret_type) + str(self.pointer) + self.name + f"({args})"
 
     def declare(self) -> str:
         return f"{str(self)};\n"